Ant species composition and richness in different types of semi-natural grasslands

2009 ◽  
Vol 40 (7) ◽  
pp. 471-476 ◽  
Author(s):  
Lisette Lenoir
Keyword(s):  
Species Composition ◽  
Natural Grasslands ◽  
Different Types

scholarly journals Ecology of Cladocera species from Central America based on subfossil assemblages

2016 ◽  
Vol 1 (1S) ◽  
Author(s):  
Marta Wojewódka ◽  
Edyta Zawisza ◽  
Sergio Cohuo ◽  
Laura Macario-González ◽  
Antje Schwalb ◽  
...  
Keyword(s):  
Species Composition ◽  
Central America ◽  
Wide Spectrum ◽  
Great Majority ◽  
Common Species ◽  
Quantitative Composition ◽  
Habitat Conditions ◽  
Mountain Regions ◽  
Different Types ◽  
Lowland Lakes

<p>Cladocera species composition was analyzed in surface sediments of 29 lakes in Central America (Guatemala, El Salvador and Honduras). The material studied was collected with an Ekman grab in autumn 2013 from lakes located in lowland, highland and mountain regions. The study revealed high variability in qualitative and quantitative composition of subfossil Cladocera. A total of 31 Cladocera species (5 planktonic and 26 littoral) were identified, as well as 4 morphotypes that could not be identified (NRR<em> </em>1-4). Planktonic Bosminidae<em> </em>and<em> </em>Daphniidae were the most abundant families. Daphniidae were restricted to water bodies in mountain regions, whereas Bosminidae were widely distributed in lakes with different abiotic conditions. Moreover, Bosminidae species also occurred in highly mineralized waters (&gt; 900 µS cm<sup>-1</sup>). The great majority of the identified Cladocera species belonged to the littoral family Chydoridae. <em>Chydorus </em>cf.<em> sphaericus</em> was the most common species (found in 20 lakes), which probably reflects its tolerance to a wide spectrum of habitat conditions. Cluster analysis discriminated 6 groups of Cladocera species with a high correlation level within groups (≥0.8), which showed different types of correlation with lake characteristics and environmental variables. Canonical correspondence analysis (CCA) showed that altitude and secondly water electrical conductivity were the most important drivers of Cladocera species composition in the region studied. Furthermore, CCA analysis indicated lowland lakes with low water transparency were also characterized by peculiar species assemblages. <strong></strong></p>

Desmids from ephemeral pools and aerophytic habitats from the Czech Republic

Biologia ◽  
2008 ◽  
Vol 63 (6) ◽  
Author(s):  
Jan Šťastný
Keyword(s):  
Czech Republic ◽  
Species Composition ◽  
Temporary Pools ◽  
Multivariate Statistic ◽  
The Czech Republic ◽  
Statistic Method ◽  
Ephemeral Pools ◽  
Different Types ◽  
Distribution And Ecology ◽  
Wetland Habitats

AbstractThe distribution and ecology of desmids in wetland habitats in the Czech Republic were studied during 2003–2007. Samples were taken also from various aerophytic habitats and temporary pools thet had not been sufficiently studied before. Altogether 110 desmids taxa were found in 31 samples which were ordinated on the basis of their desmid species composition using a multivariate statistic method. The discussion focuses on the most interesting findings and on the factors that influence the distribution of desmids in different types of aerophytic habitats.

scholarly journals Taxonomic structure of local floras in Sidinskiy and Pribaitakskiy steppes (Krasnoyarsk region)

2019 ◽  
Vol 16 ◽  
pp. 00002
Author(s):  
Ekaterina Antipova ◽  
Olga Enulenko
Keyword(s):  
Species Richness ◽  
Species Composition ◽  
Taxonomic Structure ◽  
Central European ◽  
Krasnoyarsk Region ◽  
Full Species ◽  
Central Asian ◽  
Different Types ◽  
Sayan Mountain ◽  
Mountain Country

Sidinskiy and Pribaitakskiy steppes are the part of the Minusinsk province of the Altai-Sayan mountain country. On the territory of steppes 12 local floras (LF) were marked and examined using the same method. Studies were carried out according to the recommendations of A.I. Tolmachev (1931): identification of different types of ecotypes of LF, the full species composition of ecotypes (flora inventory), tracking the completeness of detection in LF. In the Sidinskiy steppe the number of families in the LF varies from 25 (Syida) to 43 (v. Alha), in the Pribaitakskiy steppe there is a big difference in the number of families in the LF from 31 (Krasnoyarsk reservoir, Tuba) to 65 (Mayak, Idra). The leading families in the local steppe flora are Asteraceae, Poaceae, Fabaceae. The Fabaceae family ranks third in the top of ten families in 50 % of LF, determining the type of flora as the Mediterranean-Central Asian (Fabaceae-type). Different types of LF allow to determine the type of all steppe flora as mixed, combining features of boreal (Asteraceae-Poaceae- type) and steppes flora (Fabaceae-type) with close ties with Central European floras (Rosaceae-type). 4 distinct levels of species richness are determined: 1 − 496-544; 2 − 408-413; 3 − 319-374; 4 − 279-298 species.

scholarly journals Use of corvids’ nests by other bird species in Baikal Siberia and Mongolia

2019 ◽  
Vol 8 (3) ◽  
pp. 38-42
Author(s):  
Tsydypzhap Zayatuevich Dorzhiev ◽  
Evgeniya Nikolaevna Badmaeva ◽  
Tsogtbaatar Dayanzhav ◽  
Uuganbaya Enkhsaikhan ◽  
Ariyana Tomur-oolovna Saaya
Keyword(s):  
Species Composition ◽  
House Sparrow ◽  
Bird Species ◽  
Random Tree ◽  
Specific Structure ◽  
Natural Habitats ◽  
Carrion Crow ◽  
Regional Features ◽  
Different Types ◽  
Almost All

The paper presents the species composition of corvids in Baikal Siberia and Mongolia. More than 700 nests of 8 species of corvids in Transbaikalia, Baikal and Mongolia were examined. 133 cases of using nests of 5 species of corvids (Magpies, Eastern Carrion Crow, Rooks and Daurian Jackdaws) by other species of birds were noted. Nests of small corvids do not attract other birds. Nests of magpies are most commonly used; they are characterized by a specific structure. Of the 8 species that use corvid nests for nesting, Amur red-footed Falcon and long-eared owl are obligate tenants. Then goes Kestrel that prefers magpie nests. The number of these types in many places is determined by the abundance of magpies and crows. In recent years, due to the high number of magpies, the number of Amur falcons in the region is growing. They began following magpies to penetrate the outskirts of Ulan-Ude. Three species (Mallard, hobby, tree sparrows) are considered optional to be the tenants and three other species (Ruddy Shelduck, Long-eared Owl and House Sparrow) are considered to be random. Tree sparrows often nest in the magpie nests in natural habitats. Almost all types of tenants use old nests of the owners. Regional features in the use of corvid nests are revealed. Some species in different regions do not prefer the same nests of different types of corvids.

scholarly journals Sampling efficiency of a protocol to measure Odonata diversity in tropical streams

PLoS ONE ◽  
2021 ◽  
Vol 16 (3) ◽  
pp. e0248216
Author(s):  
Joana Darc Batista ◽  
Victor Rennan Santos Ferreira ◽  
Helena Soares Ramos Cabette ◽  
Lourivaldo Amancio de Castro ◽  
Paulo De Marco ◽  
...  
Keyword(s):  
Species Composition ◽  
Environmental Monitoring ◽  
Sampling Effort ◽  
Sampling Efficiency ◽  
Sampling Protocol ◽  
Future Studies ◽  
Different Types ◽  
Local Species ◽  
Over Time ◽  
Local Species Pool

Odonata can be sampled following different types of protocols. In Brazil, the most used protocol is the scanning in fixed areas method, where a 100-meter transect is delimited in one of the stream margins, subdivided into 20 segments measuring 5 meters. Despite being universally used, the methodological efficiency or limitations of this protocol for Odonata has never been tested. In this scenario, our objective was to assess the efficiency of the sampling protocol to measure the richness and composition of Odonata in three fundamental aspects: the time of sampling and sampling effort over time and space. We show that the best sampling efficiency was achieved in collections performed at noon, in transects measuring 100 meters, requiring at least two samplings in the same location, supporting the procedures traditionally adopted by many studies with the group. While comparing species composition, we did not see any implication between the different treatments on the capture of the local species pool. However, we highlight and discuss some possible methodological flaws when using this protocol to sample specific Odonata groups. We believe the results obtained are fundamental in the inventory of species and to conduct future studies, as well as to aid conservative measures that use the order Odonata as a tool for environmental monitoring.

Diversity and habitat segregation of mangrove grapsoid crabs along the west coast of the Malay Peninsula

2020 ◽  
Vol 71 (8) ◽  
pp. 984
Author(s):  
Laura Ribero ◽  
Phaik Eem Lim ◽  
Rosli Ramli ◽  
Gianluca Polgar
Keyword(s):  
Species Composition ◽  
West Coast ◽  
Coastal Wetlands ◽  
Hot Spot ◽  
Malay Peninsula ◽  
The West ◽  
Ecological Traits ◽  
Management Actions ◽  
Different Types ◽  
Local Extinctions

South-East Asia is a biodiversity hot spot for several different animal and plant taxa, and grapsoid crabs are dominant components of its mangrove macrofauna. However, autecological traits of the species and assemblage structures are still largely undescribed. During the period 2012–14, we surveyed six mainland and insular mangrove sites along the west coast of the Malay Peninsula, four of which had not been investigated previously. Species composition differed among sites with different types of substrate and forest area. Small islands, characterised by coarser intertidal substrates, hosted remarkably different assemblages from mainland systems. Most of the species occurred in a small number of sites, suggesting stenotopic ecological traits or patchy distributions, and a marked variation in species composition and environmental conditions among sites was observed. This suggests that management actions assuming that this region’s coastal wetlands have comparable community compositions may likely lead to local extinctions of species, possibly affecting the regional biodiversity of these systems.

Fungi and fungus-like organisms growing in selected lotic oxbow lakes and tributaries of the Narew River

2017 ◽  
Vol 46 (1) ◽  
Author(s):  
Elżbieta Muszyńska ◽  
Bożena Kiziewicz ◽  
Anna Godlewska ◽  
Dorota Jankowska ◽  
Michał Ordak
Keyword(s):  
Species Composition ◽  
Physicochemical Properties ◽  
Oxbow Lakes ◽  
Hydrochemical Parameters ◽  
Growing Seasons ◽  
Different Types ◽  
Favorable Conditions

AbstractMycological and hydrochemical research was conducted in two different types of reservoirs connected with the Narew riverbed (three tributaries and three lotic oxbow lakes) in two growing seasons. The obtained results seem to indicate that more favorable conditions for the development of the analyzed microorganisms prevailed in the studied tributaries of the Narew. A total of 36 species of fungi and fungus-like organisms were identified in these tributaries in spring and 35 in autumn, while respectively 32 and 26 species in the lotic oxbow lakes. Six taxa not identified in the oxbow lakes were found only in the tributaries of the river. They were:The differences observed in the microfungi species composition in the studied ecosystems are associated, among others, with the time of the year and physicochemical properties of the water. Hydrochemical parameters such as temperature, pH, Mg, N-NH

scholarly journals Grasshopper populations respond similarly to multiple moderate intensity livestock grazing treatments

2020 ◽  
Vol 29 (1) ◽  
pp. 67-69
Author(s):  
David H. Branson
Keyword(s):  
Species Composition ◽  
Great Plains ◽  
Livestock Grazing ◽  
Moderate Intensity ◽  
Northern Great Plains ◽  
Mixed Grass Prairie ◽  
Continuous Grazing ◽  
Wide Range ◽  
Different Types ◽  
Mixed Grass

Livestock grazing frequently affects grasshopper populations, but no prior studies have simultaneously examined a wide range of moderate intensity livestock grazing treatments in the Northern Great Plains. Grasshopper densities varied significantly between years, but five moderate grazing treatments, including both rotational and continuous grazing treatments, did not differentially affect grasshopper densities or species composition. Grasshopper populations appear resilient to different types of moderate grazing at this Northern Great Plains mixed-grass prairie site.

scholarly journals Effects of agricultural systems on the anuran diversity in the Colombian amazon

2020 ◽  
Author(s):  
Juan C. Diaz-Ricaurte ◽  
Nayra Camila Arriaga-Villegas ◽  
Juan David López-Coronado ◽  
Gina Ximena Macias-Garzón ◽  
Bruno F. Fiorillo
Keyword(s):  
Species Composition ◽  
Tropical Rainforest ◽  
Secondary Forest ◽  
Agroforestry Systems ◽  
Management Tool ◽  
Great Similarity ◽  
Agricultural Systems ◽  
Different Types ◽  
Forest Remnants ◽  
Colombian Amazon

AbstractWe provide information on the diversity of anurans from agroforestry systems in the Colombian Amazon. This area is inserted at the tropical rainforest ecosystem and consists mainly of secondary forest remnants surrounded by crops, grasslands, and agroforestry systems. From February to May 2015, we sampled anurans mainly with visual and auditory surveys. We recorded a total of 1096 individuals of 20 species of anurans from six families at the study area. The relictual forest was the richest environment, followed by Achapo and Cacao agroforestry systems. The Achapo system showed great similarity in species composition with relictual forest, however, the latter presented the highest number of exclusive species, whereas the first presented only two and Cacao system didn’t have any exclusive species. Our results show that the richness can vary between the different types of agroforestry systems and highlight their importance as management tool for anurans conservation in the Colombian Amazon.

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